SJC North and South Flow Pre and Post OAPM Date: January 2018
Phases of Flight ATCC ARTCC ATCC 2
AviationTerms VFR- Visual Flight Rules. Pilots must maneuver to avoid clouds and are responsible for their own terrain separation. IFR- Instrument Flight Rules. Air Traffic is responsible for both plane to plane and plane to terrain separation. VMC- Visual meteorological conditions. Weather conditions that allow for VFR Flight. IMC- Instrument meteorological conditions. Weather conditions that do not allow for VFR Flight. Instrument Approach An IFR flight path that utilizes navigational aids to provide lateral and vertical guidance to the runway. Charted Visual Approach An IFR flight path that is made up of visual land markers and is hand flown by the pilot to the runway. 3
ARTCCs & NCT airspace 4
Over 200 Airports within NCT 5
NCT Traffic 24 Hours 6
SFO Arrivals - Gold 7
OAK Arrivals - Green 8
SJC Arrivals - Yellow 9
SFO Departures - Red 10
OAK Departures - Orange 11
SJC Departures - Pink 12
Data Analysis : Dates Utilized Pre-OAPM Dates North Flow 2/23/2014 2/21/2014 2/20/2014 2/19/2014 2/17/2014 South Flow 2/8/2014 2/9/2014 2/26/2014 2/27/2014 2/28/2014 Post OAPM Dates North Flow 11/24/2016 11/29/2016 12/01/2016 12/02/2016 12/29/2016 South Flow 1/6/2016 1/17/2016 3/10/2016 10/16/2016 10/25/2016 13
South Flow SJC Traffic Pre-OAPM 5 days of traffic 1,687 Flights Post OAPM 5 days of traffic 1,962 Flights Mountain View Sunnyvale Cupertino San Jose 0 3,000 FT MSL 3,000 6,000 FT MSL 6,000 9,000 FT MSL 9,000 10,000 FT MSL 10,000 FT and up 14
South Flow SJC Traffic below 5,000 FT MSL Pre-OAPM 5 days of traffic 2,392 Flights Post OAPM 5 days of traffic 2,086 Flights Mountain View Sunnyvale Cupertino San Jose 0 1,000 FT MSL 1,000 2,000 FT MSL 2,000 3,000 FT MSL 3,000 4,000 FT MSL 4,000 5,000 FT MSL 15
North Flow SJC Traffic Pre-OAPM 5 days of traffic 2,392 Flights Post OAPM 5 days of traffic 2,086 Flights Mountain View Sunnyvale Cupertino San Jose 0 3,000 FT MSL 3,000 6,000 FT MSL 6,000 9,000 FT MSL 9,000 10,000 FT MSL 10,000 FT and up 16
North Flow SJC Traffic below 5,000 FT MSL Pre-OAPM 5 days of traffic 2,392 Flights Post OAPM 5 days of traffic 2,086 Flights Mountain View Sunnyvale Cupertino San Jose 0 1,000 FT MSL 1,000 2,000 FT MSL 2,000 3,000 FT MSL 3,000 4,000 FT MSL 4,000 5,000 FT MSL 17
South Flow Airspace/Traffic Constraints 1. SJC is on South flow when SFO is on a West flow more than 95% of the time. 2. SJC arrivals must be kept below the SFO arrivals and inside of ROKME. Red Lines SFO Arrivals Pink Lines SJC Arrivals 5,000 6,000 18
South Flow Airspace/Traffic Constraints 3. Traffic must remain 3nm from runways while on downwind 4. NCT sector airspace is designed around the procedures that the controller works. Aircraft must be kept within the airspace to protect it from aircraft that other controllers are working. Green Sectors work SJC Arrivals 3nm from runway 19
South Flow Airspace/Traffic Constraints 4. NCT sector airspace is designed around the procedures that the controller works. Aircraft must be kept within the airspace to protect it from aircraft that other controllers are working. Green Sectors work SJC Arrivals Red Sectors work SFO Arrivals 20
Constraints on an East Downwind 1. Traffic must remain 3nm from runways while on downwind 2. SJC is on South Flow when SFO is on a West Flow more than 95% of the time. 3. The SFO West final approach course is on the east side of SJC. 4. The mountains east of SJC force the aircraft to be higher. 5. Northbound SJC departures utilize the east side of the airport. 6. SJC Arrivals must be below SFO arrivals and below SJC Departures 21
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SJC Runway Usage 2008-2016 North Flow South Flow 16.41% 21.60% 32.47% 26.67% 27.00% 15.97% 20.96% 12.17% 15.85% 83.59% 78.40% 67.53% 73.33% 73.00% 84.03% 79.04% 87.83% 84.15% 2008 2009 2010 2011 2012 2013 2014 2015 2016 23
SJC Runway Usage 2014-2016 100.00% 90.00% South Flow North Flow 80.00% 70.00% 60.00% 50.00% 40.00% 30.00% 20.00% 10.00% 0.00% Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2014 2015 2016 24
SJC Runway Usage - 2016 South Flow 100.00% North Flow 90.00% 80.00% 70.00% 60.00% 50.00% 40.00% 30.00% 20.00% 10.00% 0.00% Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 25